Heat map (IMAGE) Penn State Caption This composite map shows land areas that could face extreme heat if the planet continues to warm (indicated in yellow and orange). The darker the color, the longer the projected exposure to extreme heat. Credit Courtesy of Daniel Vecellio, Qinqin Kong, W. Larry Kenney and Matthew Huber; composite image by Dennis Maney, Penn State Usage Restrictions Educational use only License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.